random_selection.hpp

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#ifndef MLPACK_METHODS_NYSTROEM_METHOD_RANDOM_SELECTION_HPP
#define MLPACK_METHODS_NYSTROEM_METHOD_RANDOM_SELECTION_HPP
 
#include <mlpack/prereqs.hpp>
 
namespace mlpack {
namespace kernel {
 
class RandomSelection
{
 public:
  const static arma::Col<size_t> Select(const arma::mat& data, const size_t m)
  {
    arma::Col<size_t> selectedPoints(m);
    for (size_t i = 0; i < m; ++i)
      selectedPoints(i) = math::RandInt(0, data.n_cols);
 
    return selectedPoints;
  }
};
 
} // namespace kernel
} // namespace mlpack
 
#endif